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Evaluations of an Enhanced Total Hydrocarbon Analyzer With Complex Mixtures of Volatile Organic CompoundsFrom the earliest manned missions, the volatile organic compound (VOC) content of spacecraft air has been a concern because of a much greater potential for contamination than air in most terrestrial settings. First, the volume of air is small compared to the mass of man- made materials comprising the interior furnishings of the spacecraft. These man-made materials offgas VOCs trapped during manufacture. Second, the nitrogen fraction of the air is recycled. Any VOCs not scrubbed out with charcoal filters or aqueous condensate (mainly water expired by the crew) will accumulate in the air. Third, the crew emits metabolic VOCs. Fourth, experimental payloads can also offgas or accidentally release a VOC; in fact a major organic constituent of the atmosphere is the disinfectant isopropanol released from swabs used in medical experiments.
Document ID
19990031799
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Cross, John H.
(Krug Life Sciences, Inc. Houston, TX United States)
Limero, Thomas F.
(Krug Life Sciences, Inc. Houston, TX United States)
James, John T.
(NASA Johnson Space Center Houston, TX United States)
Breach, James
(Graseby Dynamics Ltd. Watford, United Kingdom)
Hinton, Mark
(Graseby Dynamics Ltd. Watford, United Kingdom)
Date Acquired
August 19, 2013
Publication Date
January 1, 1995
Publication Information
Publication: Fourth International Workshop on Ion Mobility Spectrometry: Proceedings of an International Speciality Workshop
Subject Category
Chemistry And Materials (General)
Distribution Limits
Public
Copyright
Other
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